USGS · 1013585
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D. Anderson, O. Dixon. 1988. An early in vitro sampling method for fish immunization programs. https://pubs.usgs.gov/publication/1013585
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High incidences of Ichthyophonus hoferi, a parasite primarily of marine and estuarine fishes, have recently been reported in rockfishes and Pacific herring from the eastern North Pacific (Kent et al 2001, Hershberger et al 2002). Taxonomic position of I. hoferi remains unresolved, but recent phylogenetic studies have grouped the organism with Dermocystidium, Psorospermium, the rosette agent of salmonids, and Rhinosporidium in the Mesomycetozoa, a novel clade of protists near the animal-fungal divergence (Herr et al 1999). Genetic differences among isolates from the east coast of North America indicate that more than one species of Ichthyophonus exist (Rand et al 2000), and different species have likely been assigned the same name based on morphological characteristics. Therefore, hereafter in this manuscript, the organism will be referred to as Ichthyophonus .
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